Analysis of chiral carboxylic acids by NMR using new optically active amines
摘要:
The two amines (+)-9-(1-aminoethyl)phenanthrene 3 and (-)-9-(1-amino-ethyl)anthracene 4 have been prepared by resolution of the corresponding racemic amines and tested as auxiliaries for the NMR analysis of racemic carboxylic acids including highly polar acids such as 6. (-)-4 turns out to be the most effective auxiliary among the arylmethylamines of type 1.